Hi, SIP Presence Event Package RFC( 3856 ) says that From and To of a
SUBSCRIBE cannot be a TEL URI:

  Section 5.

     SUBSCRIBE messages also contain logical identifiers that define the
     originator and recipient of the subscription (the To and From header
     fields).  These headers can take either a pres or SIP URI.


Why? Why is valid a PRES URI but not a TEL?


-- 
Iñaki Baz Castillo
<[EMAIL PROTECTED]>

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